393 results about "Biological filter" patented technology

The invention discloses an urban road rainwater runoff stage treatment system and method, and relates to the technical field of urban rainwater pollution treatment. In order to solve the problems that an existing system is difficult to monitor multi-index water quality in real time, the pollution degree is accurately recognized, and distribution control lacks dynamics, the system is provided with a multi-source spectrum water quality monitor at the tail end of a pipe network, turbidity, COD, TOC and heavy metal concentration are monitored in real time, rainfall intensity data are accessed into a control center, the pollutant load instantaneous rate L is calculated through a weighted summation formula, and the real-time monitoring of the pollution degree is achieved. A controllable flow distribution module in the flow distribution well distributes the rainwater to an enhanced treatment unit, a biological aerated filter system or a horizontal flow sedimentation tank, wherein the enhanced treatment unit comprises a rotational flow sand setting unit, an electrochemical heavy metal degradation unit and a chemical flocculation unit. The system is mainly used for realizing quality-divided efficient treatment and resource recycling of rainwater and guaranteeing the safety of a receiving water body.

The invention relates to the technical field of water treatment, in particular to a prawn fry raw water biological filter treatment device. According to the technical scheme, the device comprises a pretreatment box, a disinfection box, an adjusting plate, a fine treatment box, a motor and a purification box, a screw is arranged at the output end of the motor, a nut in threaded installation with the screw is arranged at the upper end of the adjusting plate, the outer wall of the adjusting plate is sleeved with an air bag, an air pump is arranged at the upper end of the adjusting plate, and the air pump and the air bag are communicated and provided with an air supply pipe; a pressure relief valve is arranged in the air supply pipe, a disinfection box is arranged on one side of the lower portion of the fine treatment box, sealing gaskets are arranged on the inner wall of the fine treatment box and the outer wall of the purification box, overflow holes are formed in the side wall of the lower end of the purification box, and a filter material layer is arranged in the purification box. Through modular design, the efficiency and economical efficiency of prawn fry raw water treatment are remarkably improved, and the problems that a large-area biological filter cannot flexibly adjust the treatment capacity and is difficult to adapt to different scale requirements are solved.

The invention belongs to the technical field of wastewater treatment and recycling, and relates to a low-pressure ultrafiltration sewage treatment method and device based on bioelectrochemical enhancement and application. The treatment device consists of a water inlet tank, a constant water level water tank, a cathode, a resistor, a membrane assembly, a biological filter cake layer, a pre-filtering layer-anode, an ultrafiltration membrane, a water collecting device, a data acquisition module and a computer. The treatment device is used for treating effluent of a secondary sedimentation tank of a sewage plant and tail water of livestock and poultry breeding wastewater; on the basis of retaining nitrogen and phosphorus resources, deep removal of heavy metals and antibiotics is realized, propagation of resistance genes is inhibited, and safe reuse of nitrogen and phosphorus resources in effluent of sewage plants and tail water of livestock and poultry breeding wastewater can be realized. In the invention, low-pressure ultrafiltration adopts transmembrane pressure difference generated by gravitational potential energy to realize continuous flow filtration, coupled bioelectrochemistry utilizes electric energy generated by biodegradation of organic matters to realize reduction of heavy metals and deep removal of reinforced antibiotics, and the method has the advantages of greenness, low carbon and sustainability.

The utility model relates to the technical field of sewage treatment equipment, in particular to an electrolytic biological filter system for rapid treatment of overflow pollution, which comprises a bioelectrochemical system and a biological aerated filter system, the bioelectrochemical system comprises a tank body I, a biological anode and a biological cathode are arranged in the tank body I, and the biological anode and the biological cathode are arranged in the tank body II. The biological anode and the biological cathode are connected to a power supply, the biological aerated filter system comprises a tank body II, sewage treated by the tank body I enters the tank body II, an aeration device, a filtering device and a clear water outlet device are arranged in the tank body II, and the biological electrochemical system is coupled with the biological aerated filter through the aeration device, the filtering device and the clear water outlet device. The electrolytic biological filter system for rapidly treating overflow pollution is formed, the rapid electron transfer characteristic of a bioelectrochemical system is fully utilized, the denitrification rate of the biological aerated filter is increased, the treatment time can be greatly shortened under the same denitrification requirement, and the effect of rapidly treating overflow pollution in emergency is achieved.

The invention relates to the technical field of wastewater treatment, and provides a papermaking wastewater precipitation and recovery device which comprises air flotation equipment and a filter tank, and further comprises a filter cartridge, a wastewater pipe, a backwashing recovery assembly, a biological filter tank and a biological filter assembly, the two ends of the filter cartridge are sealed and rotationally sleeved with bearing supports respectively, and the two bearing supports are symmetrically arranged; a mounting rack is mounted on the filter tank, a bearing bracket is fixedly mounted in the mounting rack, a wastewater pipe is fixedly mounted on the mounting rack, a backwashing recovery assembly is mounted in the filter cartridge, a water distribution tank, a filter area and an overflow area are arranged in the biological filter tank, and a biological filter assembly is mounted in the biological filter tank. The problems that in the prior art, fine fibers, colloids and mixed impurities in waste water are prone to blocking a filtering structure, the waste water treatment process is discontinuous, frequent shutdown is needed for cleaning the filtering structure, and the overall treatment efficiency and stability are low are solved.

The utility model relates to the technical field of wastewater treatment, in particular to a sulfur autotrophic denitrification filter tank device driven by a suspended packed bed. The sulfur autotrophic denitrification filter tank device comprises a regulating tank, a sulfur autotrophic denitrification biological filter tank and a sedimentation tank which are communicated in sequence; the adjusting tank is used for homogenizing the wastewater; a suspended sulfur autotrophic denitrification biological filler is arranged in the sulfur autotrophic denitrification biological filter, and the sulfur autotrophic denitrification biological filter is used for performing a sulfur autotrophic denitrification reaction to remove nitrate nitrogen in the wastewater; the sulfur autotrophic denitrification biofilter is also connected with a sulfur autotrophic denitrification dosing tank; the settling pond is used for standing and settling the wastewater; a water outlet for discharging treated wastewater is formed in the top of the sedimentation tank. According to the utility model, the suspended biological filler is combined with the sulfur autotrophic denitrification reagent, and the suspended sulfur autotrophic denitrification biological filler is arranged in the sulfur autotrophic denitrification biological filter, so that the mass transfer efficiency can be improved, and the deep removal of nitrate nitrogen in wastewater is realized.

The invention belongs to the technical field of environmental governance, and particularly relates to a waste gas treatment system, application thereof and a treatment method for malodorous gas generated by a household garbage landfill. The waste gas treatment system provided by the invention comprises an alkali washing spray tower, a biological filter bed of which a bottom first gas inlet is communicated with a top outlet of the alkali washing spray tower, a deodorization spray tower of which a bottom gas second inlet is communicated with a top outlet of the biological filter bed, and an emptying pipe communicated with a top outlet of the deodorization spray tower. When the waste gas treatment system is used for treating malodorous gas, the malodorous gas can be subjected to three-step purification treatment of primary gas-liquid mass transfer, microbial degradation and secondary gas-liquid mass transfer, various harmful substances in the waste gas can be efficiently removed, meanwhile, the system is not prone to leakage, continuous treatment can be achieved, and the waste gas treatment efficiency is improved. And the secondary pollution is reduced while the treatment effect is ensured.

The invention relates to the technical field of water treatment, and discloses a multi-stage linkage water quality purification treatment method for drainage basin treatment, which comprises the following steps: reducing the flow rate of drainage basin runoff entering a pretreatment pool by using a stepped energy dissipation ridge; an overflow weir is arranged between the pretreatment pool and the biochemical purification unit, runoff with the flow lower than a threshold value is guided to the biochemical purification unit according to a water level pressure head, and excessive flow is guided to a bank zone ecological buffer zone; enabling the runoff to sequentially flow through the anaerobic biological filter tank and the aerobic ecological tank, and generating gravity flow by utilizing a unit elevation difference; according to the invention, the self-adaptive flow distribution is realized by utilizing a water level physical signal, the scouring stripping of a microbial film of a biochemical unit by a dynamic load is effectively prevented, and the stability of the effluent quality of the system is maintained through kinetic energy level conversion.

The invention discloses integrated aquaculture tail water treatment equipment and method, and belongs to the technical field of aquaculture tail water treatment. The interior of the box body is divided into a plurality of units by partition plates, and a primary filtering self-cleaning unit, a secondary filtering and disinfecting unit, a composite biological membrane treatment unit, a deep physical-biological filtering unit and a modular composite adsorption unit are sequentially arranged in the flowing direction of a water body; the primary filtering self-cleaning unit is used for primarily filtering tail water; the secondary filtering and disinfecting unit is used for disinfecting and further filtering the water body; the composite biological membrane treatment unit is used for treating a water body by utilizing a nitrification-denitrification composite microbial membrane; the deep physical-biological filtering unit is used for treating a water body by utilizing a rattan cotton filtering medium which is stacked in a multi-layer manner; the modularized composite adsorption unit is used for adsorbing a water body. The system has the advantages of high integration, intelligent self-control, convenient maintenance, stable operation and the like.

The utility model relates to sewage treatment technical field proposes a kind of biological deodorization device for sewage treatment station, filtering mechanism, filtering mechanism includes first mounting bracket, and electric push rod is installed on first mounting bracket, and the output end of electric push rod is connected with installation frame, and filter screen is installed on installation frame;Cleaning mechanism, cleaning mechanism includes second mounting bracket, and multiple brushes are connected on second mounting bracket, and the bottom end of second box body is installed with first motor, and the output end of first motor is connected with second mounting bracket;Fan is installed to the top end of second box body, and the input end of fan is communicated with second box body, and the output end of fan is communicated with first box body, the device is rotated by second motor drive installation ring, to adjust the position of first biological filter bed and second biological filter bed, reduce replacement step, improve use convenience, by first motor drive multiple brushes rotation, to carry out cleaning to particulate matter on filter screen, improve filtration effect.

The utility model discloses a multistage deodorization device of a biological filter, which relates to the technical field of waste gas treatment and comprises a treatment tank, the filter box is arranged on the outer surface of the treatment tank and is used for filtering; the sealing cover is arranged on the upper surface of the treatment tank; the heating unit is arranged in the treatment tank and is used for heating; the stirring unit is arranged in the treatment pond and used for stirring, the inner wall of the treatment pond is fixedly connected with a partition plate, and the interior of the filter box is detachably connected with a multi-stage filter screen plate. According to the utility model, the heating box, the circulating pump, the connecting pipe, the circulating heating pipe and the temperature controller are matched with one another to perform auxiliary heating on the interior of the treatment tank, so that microorganisms in the biological reaction tank are facilitated to decompose waste liquid; the waste liquid in the treatment pond can be conveniently and slowly stirred by adopting the mutual cooperation of the treatment pond, the filter box, the hydraulic cylinder, the limiting sliding rod, the moving plate, the connecting plate, the limiting block and the stirring roller, so that the decomposition efficiency of deodorization can be improved.

The invention discloses a river crab-snail breeding method based on space-time isolation and micro-flowing water circulation, and relates to the technical field of aquaculture, the key points of the technical scheme are that an isolation barrier is arranged in a river crab breeding pond, the river crab breeding pond is divided into a snail breeding area and a river crab main breeding area, and a water passing structure is arranged on the isolation barrier; a three-dimensional inhabiting base frame is arranged in the snail breeding area; generating directional water flow by utilizing oxygenation equipment to drive water in the main river crab breeding area to flow back after being filtered and purified by the snail breeding area; seed snails are put into the snail breeding area, and the snails grow and breed by feeding nutrient substances in the water body of the main river crab breeding area; collecting finished snails from the snail breeding area regularly and transferring the finished snails to the main river crab breeding area for feeding of the river crabs; in the river crab fattening period, the snail breeding area is opened, and the river crabs are allowed to freely eat the remaining snails. By means of the method, it can be guaranteed that snail populations rapidly breed to form a high-density biological filter bed, high-quality active protein bait can be provided for river crabs, and the win-win situation of water purification and feed cost reduction is achieved.

The utility model belongs to the technical field of domestic sewage treatment biological filter beds, and particularly relates to an integrated active biological filter bed for centralized treatment of domestic sewage, which comprises a base and a water-oil separator, a sedimentation tank is arranged at the top of the base, a water inlet pipe is arranged on the left side wall of the sedimentation tank, a screen is arranged on the inner wall of the water inlet pipe, and a water outlet pipe is arranged on the water inlet pipe. A water pump is arranged at the top of the sedimentation tank, a water pumping pipe is arranged at the top of an inner cavity of the sedimentation tank, one end of the water pumping pipe is connected with the bottom of the water pump, and a connecting pipe is arranged at the top of the water pump. Therefore, the filter capacity is improved, the growth and metabolism of the biological filter bed are facilitated, and the service life of the biological filler is greatly prolonged.

The invention discloses a double-sludge and double-circulation membrane biological sewage treatment device and a double-sludge and double-circulation membrane biological sewage treatment method. Comprising an anaerobic zone, an anoxic zone, an aerobic zone and an MBR (Membrane Bioreactor) pre-anoxic zone which are arranged in sequence, and further comprises a cylindrical shell and a treatment tank at the center of the shell, a rotary gallery is arranged in the shell on one side of the treatment tank; a snakelike coiled gallery is arranged in the shell on the other side of the treatment tank; the anaerobic zone is arranged in the rotary gallery; the anoxic zone and the aerobic zone are jointly arranged in a snakelike coiled corridor, and the aerobic zone is divided into four continuous sections, namely a first aerobic zone, a second aerobic zone, a third aerobic zone and an aerobic nitrification zone; sewage is lifted by a through-wall pump to enter an MBR pre-anoxic zone, and the MBR pre-anoxic zone is divided into an upper section and a lower section; a cylindrical membrane biofilter is arranged in the MBR filtering area; and the cylindrical membrane biofilter is driven by a variable frequency motor to rotate. By arranging the double-circulation galleries, the circulation multiples of the anaerobic zone and the anoxic and aerobic zone can be controlled respectively, and the target removal rate of pollutants is achieved.

The utility model discloses a biological bed device applied to fishpond culture tail water. The biological bed device comprises an anaerobic biological filter bed and an aerobic biological filter bed, an anaerobic biological filter bed is arranged in the sedimentation tank; an aerobic biological filter bed is arranged in the aeration tank, and an aeration mechanism is arranged below the aerobic biological filter bed; an ecological pool; a circulating pump; and the electric control system is respectively in signal connection with the aeration mechanism and the circulating pump. After sewage enters the sedimentation tank, flora on the anaerobic biological filter bed plays a role in removal and degradation, the sewage flows into the aeration tank after primary degradation, and pollutants in the sewage are converted and utilized by flora on the aerobic biological filter bed. And the circulating pump is arranged between the ecological pond at the tail end and the sedimentation pond, so that sewage flows back to the sedimentation pond to further enhance the absorption and degradation of pollutants, the sewage can be degraded to the greatest extent, the concentrated retention time of the sewage is shortened, and the operation cycle of the ecological system is accelerated.

The present application relates to the field of sewage treatment, and specifically discloses a diversion aeration biological filter, including a mounting frame and a filter body, the filter body including an outer cylinder and an inner cylinder, a mud outlet pipe is provided on one end of the outer cylinder close to the mounting frame, a first rotating plate and a second rotating plate are provided on the inner wall of the mud outlet pipe for lifting and lowering, a first mud inlet and a filter port are provided on the first rotating plate at intervals, a first filter plate is provided on the filter port, a baffle and a reset member are provided on the first filter plate; a second mud inlet is provided on the second rotating plate, and a drive assembly is provided on the first rotating plate and the second rotating plate; in the present application, the drive assembly can align the first mud inlet and the second mud inlet, and the sludge can enter the mud outlet pipe through the first mud inlet and the second mud inlet, the drive assembly can also align the filter port and the second mud inlet, so that the first rotating plate and the second rotating plate are synchronously lowered, and the moisture in the sludge entering the mud outlet pipe can be filtered out through the first filter plate.

The application provides a biological denitrification treatment method for low-carbon-nitrogen-ratio wastewater, and utilizes single-stage nitrification and denitrification to treat ammonia-nitrogen wastewater in a one-piece submerged biological filter (SBAF reactor). The method comprises the following steps: sludge inoculation, sludge biofilm formation, system starting, and stable operation. In the sludge inoculation, sludge meeting the microbial community distribution is selected. In the system starting process, the microbial community distribution in the sludge in the one-piece submerged biological filter (SBAF reactor) is used as the symbol of successful system starting. During the input of the high-concentration ammonia-nitrogen wastewater to be treated, the aerobic nitrifying bacteria and the anaerobic denitrifying bacteria can more stably meet the above microbial community distribution, the system has better stability, the stable operation time is longer, the sludge does not need to be replaced for restarting during the stable operation, the continuous operation time is longer, can reach at least 250 days or more, and the frequency of replacing the sludge for restarting is reduced.

The utility model discloses a biological filter tower device with a deodorization function, which comprises a water collecting tank, the top of the water collecting tank is fixedly connected with a shell, the inner wall of the top of the shell is fixedly connected with a spraying frame, the inner walls of the two sides of the shell are respectively provided with a guide rail, a sliding frame is movably connected between the guide rails, a filler is arranged in the sliding frame, and the filler is arranged in the sliding frame. Clamping openings are formed in the inner walls of the two sides of the shell correspondingly, two second avoiding grooves are formed in the outer wall of one side of the sliding frame, clamping frames are movably connected into the two second avoiding grooves correspondingly, the clamping frames are connected with the clamping openings in a clamped mode, the outer sides of the clamping frames are sleeved with second springs, and the two ends of the second springs are fixed to the clamping frames and the sliding frame correspondingly; and a pull rope is mounted at one end of the clamping frame. According to the sewage treatment device, not only can the filler be conveniently replaced by a worker, but also sewage can be doubly filtered through the matched use of the filler and the filter cotton, and the pull rope can be guided through the rotating wheel.

The application discloses a microorganism-loaded activated carbon composition, a nitrile-containing wastewater pretreatment process and device and the device, and belongs to the technical field of microorganism culture and wastewater treatment device. In view of the technical problems that the electric conduction capacity and biodegradation efficiency of biological filler are poor when an electric catalysis internal circulation aeration biological filter is used for pretreatment of nitrile-containing wastewater in the prior art, and only the biodegradability of wastewater is improved, and the organic nitrile cannot be converted into available substrate, the application provides a microorganism-loaded activated carbon composition, which comprises activated carbon loaded with Shewanella oneidensis or Rhodococcus globerulus at a mass ratio of 1:2 to 1:3, and the amount of the activated carbon loaded with Shewanella oneidensis or Rhodococcus globerulus is 10 9 ~ 10 10 CFU / g, and the composition has good electric conduction capacity and biodegradation efficiency. The application further provides a nitrile-containing wastewater pretreatment process and device, which comprises the following steps: introducing nitrile-containing wastewater into the device body, and sequentially using electric treatment and a micro-nano bubble generator for treatment, and has the advantages of low power consumption, low treatment cost, convenient and safe operation, green and environment-friendly process and the like.

A water treatment system for a water reservoir comprises a collection box; a rotary drum filter arranged to receive gravity flow from the collection box through a receiving line; a primary bio-filter; a secondary bio-filter; one or more connecting lines originating at the rotary drum filter and comprising at least a first outlet line connected to the primary bio-filter and a second outlet line connected to the secondary bio-filter, the second outlet line comprising a pump; and a return line originating at the primary bio-filter and terminating at the water reservoir. The collection box has a bottom and sides defining an interior volume, and comprises a first water intake having a first riser; a second water intake having a second riser; and a third water intake having a third riser, each riser being disposed inside the interior volume and extend upwardly from the bottom of the collection box.

The utility model discloses a biological filter for sewage treatment, and relates to the technical field of sewage treatment, the biological filter comprises a treatment chamber, an aeration assembly and a decontamination assembly, a biological filter layer is arranged at the upper part in the treatment chamber, the aeration assembly is arranged at the lower part in the treatment chamber, a motor mounting frame is fixed at one side in the treatment chamber, and the motor mounting frame is fixed at the other side in the treatment chamber. And a linear motor is slidably mounted in the motor mounting frame, a dirt removal assembly is mounted below the linear motor and comprises a fixing rod, a dirt removal scraper, a connecting rod, a lantern ring and an annular scraper, and the dirt removal scraper is connected to the bottom of the fixing rod. According to the biological filter for sewage treatment, a sewage cleaning scraper of the sewage cleaning assembly can move to clean sludge on the bottom surface of the treatment chamber, the sludge is intensively pushed to one side of a sewage discharge pipe so as to facilitate timely sewage discharge, and meanwhile, the movement of the sewage cleaning scraper can drive a connecting rod and a lantern ring to synchronously move; and the annular scrapers on the two sides of the lantern ring can descale the surface of the aeration pipe.

The present application relates to sewage treatment technical field, disclose a kind of rural sewage treatment system, including filter tank, biological filter, ecological filter, purification tank and disinfection tank, and filter tank is equipped with grating device;Biological filter is equipped with filler area and aeration pipe, and the sewage of treatment cavity is transported to biological filter by lifting pump;Ecological filter includes amphibious plant area, aquatic plant area and microalgae area, amphibious plant area includes first pool body and planted amphibious plant;Aquatic plant area includes second pool body and planted aquatic plant;Microalgae area includes third pool body and planted microalgae, and the upper portion of purification tank is equipped with water outlet, and multiple modified ceramsite columns are uniformly arranged in purification tank, and the inner pool wall in disinfection tank is equipped with multiple ultraviolet lamps.The present application is suitable for the change of water pollution load, improves sewage treatment stability, improves effluent quality, to reach reuse irrigation standard.

The invention relates to the technical field of water treatment, in particular to a composite treating agent for municipal sewage and a preparation method thereof.The composite treating agent is prepared by selecting industrial solid waste boric sludge, fly ash and the like as raw materials, taking biomass raw material epoxidized soybean oil as a binder, taking biomass raw material starch and plant-based porous carbon as adsorbents, mixing the raw materials with sodium silicate and water for granulation, and preparing the composite treating agent. The baking-free composite treating agent integrating multiple functions of sulfur autotrophic denitrification nitrogen removal, phosphorus removal, heavy metal chelating, porous carbon adsorption and the like is prepared, and when the baking-free composite treating agent is applied to urban sewage treatment, synchronous low-carbon and high-efficiency removal of various pollutants such as nitrogen, phosphorus and heavy metal can be achieved; after being granulated and formed, the composite treatment agent can be used as a filler of a biological filter to support the growth of sulfur autotrophic denitrifying bacteria, and can also be directly added into a pretreatment unit or an advanced treatment unit of a sewage treatment system.

The utility model discloses a device for on-line replacement of a spraying system in a biological filter, which comprises a sewage pipe, a spraying pipe and a spraying head, a water pipe bayonet is arranged on the sewage pipe, a clamping component matched with the water pipe bayonet is arranged at the joint of the sewage pipe and the spraying pipe, and the spraying head is arranged on the spraying pipe. A water retaining cap matched with the clamping assembly is installed at the bottom of the water pipe bayonet, a filtering box is installed at the joint of the spraying pipe and the spraying head, and a filtering assembly is installed in the filtering box. Compared with the prior art, the spraying device has the beneficial effects that the clamping assembly which is convenient to disassemble is arranged between the spraying pipe and the sewage pipe and is matched with the filtering assembly which is convenient to replace and is arranged above the spraying head, so that the replacing and cleaning efficiency of the spraying assembly is improved, the operation procedures are reduced, and the spraying assembly is convenient to disassemble and replace quickly.

The utility model relates to circulating water aquaculture filtration technical field discloses a kind of three-dimensional filter devices of circulating water aquaculture, including coarse filter box, the coarse filter box inside is provided with coarse filter screen, the coarse filter box side wall is provided with fine filter box, the fine filter box inside is provided with fine filter screen, the fine filter box side wall is provided with biological filter box, the biological filter box inside is provided with filler plate, the biological filter box side wall is provided with clean water tank, the coarse filter box side wall is provided with cleaning assembly, the biological filter box inside is provided with mounting assembly;The cleaning assembly includes cleaning plate, and the cleaning plate side wall is attached to the coarse filter screen side wall.In the utility model, the chain sprocket and chain transmission driven by motor are used to move the cleaning plate up and down along the coarse filter screen to scrape off impurities, so as to achieve the effect of automatic cleaning of filter screen and prevention of blockage. The above structure improves the automation maintenance efficiency of the filter device and reduces the labor operation cost.

The application discloses a biofilter and relates to the technical field of sewage treatment, which comprises a filter body, an aeration pipe is fixedly installed at the bottom end of the filter body, a support frame is arranged around the aeration pipe, the support frame comprises vertical rods and horizontal rods which are fixedly connected with each other, the vertical rods are fixedly connected with the filter body, the top end of the horizontal rods is provided with a same biofilter membrane, a liquid outlet cabin is arranged on one side of the filter body, slag prevention pieces are rotatably connected to the two sides of the vertical rods, the slag prevention pieces comprise slag blocking shells and mounting plates which are fixedly connected with each other, gas flows out through the gas passing holes of the slag blocking shells, the slag blocking shells have a certain blocking effect on solid particles in waste gas, a pretreatment cabin and a prefiltering screen for pretreating waste gas are arranged on one side of the filter body, and the waste gas is treated for multiple times, so that the technical problem that solid particles in waste gas easily cause the biofilter membrane to be blocked and affect the filtering effect of the biofilter membrane on waste gas is solved.

The application discloses a kind of green and efficient pig breeding method and system, belong to the technical field of animal husbandry breeding.The method of the application includes four steps of preparation, management in the period of nursing and fattening, processing in the period of leaving and cleaning, resource recycling and facility maintenance.By spraying photocatalysis-microorganism composite functional coating on the surface of pig house, combined with AI visual dynamic precise feeding, source reduction is realized;By using bionic electronic nose and ventilation, deodorization system linkage, process intelligent control is realized;By using electrochemical circulating water washing, waste heat coupling biological filter or shared deodorization container, end efficient purification and small and medium field adaptation are realized;Finally, wastewater and waste material are recycled.The application solves the problems of unstable effect, high energy consumption, low intelligent degree, poor adaptability of small and medium field of existing odor control technology, and has the advantages of source reduction precision, process control in situ, end treatment closed loop, operation intelligence and easy popularization of small and medium field.

The utility model belongs to the technical field of odor treatment, and provides a BIM (Building Information Modeling)-based biochemical treatment deodorization device, which comprises a biological deodorization tower, a BIM-based biochemical treatment deodorization device and a BIM-based biochemical treatment deodorization device, and is characterized in that the biological deodorization tower comprises a pre-washing tank and a biological filter tank, a plastic filler area is arranged in the pre-washing tank, a biological filter material area is arranged in the biological filter tank, and the pre-washing tank is communicated with the biological filter tank; an air outlet of the fan is communicated with the inner top of the pre-washing pool; the circulating water tank is communicated with the inner bottom of the pre-washing pool; an inlet of the spraying pump is communicated with the circulating water tank, an outlet of the spraying pump is communicated with the upper calandria, nozzles are arranged at the tops in the prewashing pool and the biological filter, and the nozzles are communicated with the upper calandria through connecting branch pipes; and the control cabinet is electrically connected with the fan and the spraying pump. According to the device, odor substances are subjected to two-stage deodorization by utilizing the plastic filler area and the biological filter material area in the biological deodorization tower, so that the deodorization effect is guaranteed. Gas in the biological deodorization tower is treated through spraying water collected at the bottom in the pre-washing pool, humidification and temperature adjustment circulation in the tower is formed, and the requirement for the deodorization operation environment is met.

The present application relates to water pollution treatment technical field, disclose the present application discloses a kind of V filter tank for sewage treatment, including multiple filter tank main body, water inlet groove, biological filter layer, quartz sand filter material layer, supporting layer, filter plate and water outlet groove are sequentially arranged from top to bottom in each filter tank main body;Biological filter layer includes installation frame and multiple layers of sliding frames arranged in installation frame along horizontal direction, each layer of sliding frame is separated into multiple through slots by partition, biological filler is fixed in through slot, heating wire is arranged in the inside of partition, iron block is arranged on sliding frame, electromagnet and spring are correspondingly arranged on installation frame;When the temperature of water inlet is lower than the set threshold, heating wire is powered to heat, electromagnet is powered to make multiple layers of sliding frames staggered, and the water flow channel is changed from vertical straight path to zigzag path.The present application can quickly improve water temperature and prolong contact time under low temperature condition, guarantee the metabolic activity of denitrifying bacteria, and realize stable denitrification effect.

The utility model discloses a coagulative precipitation and full-automatic filter tank up-down type water purifier which comprises a coagulative precipitation tank body and a biological filter tank body, the coagulative precipitation tank body and the biological filter tank body are stacked, and the coagulative precipitation tank body is positioned below the biological filter tank body; a plurality of first partition plates are arranged in the coagulative precipitation tank body and divide an inner cavity of the coagulative precipitation tank body into a plurality of parts, namely a lifting tank, a mixing tank, a flocculation tank and a precipitation tank; a plurality of second partition plates are arranged in the biological filter tank body and divide the inner cavity of the coagulating sedimentation tank body into a plurality of parts, namely an aerobic biological filter tank, an anoxic biological filter tank and a clear water tank. The device is small in occupied area, low in operation cost and simple and convenient to maintain, and meets the requirements of application scenes such as feed water treatment, sewage regeneration and reuse, river and lake enhanced treatment and industrial wastewater deep treatment.